Via the "Deep Space Network" - a network of many radio antenna on the Earth. It's signals are faint at that distance so you need giant "radio dishes" to receive them.
You can get an overview of all the communications going on with spacecraft at any time here:
Deep Space Network Now
So checking right now, one of the radio telescopes is receiving data from Rosetta, as you might expect. And it even tells you which antenna is receiving the data. At the time of writing this answer, Rosetta is communicating with Earth via this one in the Goldstone network:
More about it: NASA Deep Space Network (wikipedia)
Home Page - Deep Space Network (JPL)
You can get an overview of all the communications going on with spacecraft at any time here:
Deep Space Network Now
So checking right now, one of the radio telescopes is receiving data from Rosetta, as you might expect. And it even tells you which antenna is receiving the data. At the time of writing this answer, Rosetta is communicating with Earth via this one in the Goldstone network:
Home Page - Deep Space Network (JPL)
About the Author
Robert Walker
Writer of articles on Mars and Space issues - Software Developer of Tune Smithy, Bounce Metronome etc.Studied at Wolfson College, Oxford
Lives in Isle of Mull
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